Determine the IRR on the following projects: a. An initial outlay of $8,000 resulting in a free cash flow of $1,931 at the end of each year for the next 11 years b. An initial outlay of $8,000 resulting in a free cash flow of $2,189 at the end of each year for the next 18 years c. An initial outlay of $8,000 resulting in a free cash flow of $1,172 at the end of each year for the next 12 years d. An initial outlay of $8,000 resulting in a free cash flow of $2,809 at the end of each year for the next 4 years